• Arch Orthop Trauma Surg · Jan 1993

    Clodronate increases the calcium content in fracture callus. An experimental study in rats.

    • M T Nyman, P Paavolainen, and T S Lindholm.
    • Department of Clinical Sciences, Tampere University, Finland.
    • Arch Orthop Trauma Surg. 1993 Jan 1; 112 (5): 228-31.

    AbstractEighty-eight rats underwent intramedullary pin fixation and fracture of both tibiae. Half of the animals were given clodronate 50 mg/kg s.c. weekly. Clodronate treatment did not affect the growth of fibrocartilage or the endochondral and membranous new bone formation. The regaining of tensile load capacity of fractured bone remained unaffected by the drug. Calluses were remodeled to lamellar bone in both groups. However, although the total area invaded by mineralized tissue in callus remained unaffected by the drug, the areas of hematopoietic bone marrow tissue within mineralized callus were observed to be markedly smaller in clodronate-treated animals than in controls. The calluses in the clodronate group were significantly heavier and contained more calcium at 2 months after fracture than those in the controls.

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